If the scanner driver is installed in Windows 8, and if Windows 8 is upgraded to Windows 8.1 while keeping the scanner driver installed, scanning from the product (by using the SCAN button) may not be available. Re-install the scanner driver after upgrading to Windows 8.1.

When MP Driver installation was stopped by the following acts with the screen awaiting connection, install it again. The installation is not completed even if plugged-in the USB cable again or turned-on the power supply again.